BiScO3-PbTiO3 nanofibers piezoelectric sensor for high-temperature pressure and vibration measurements.

• The BS-PT nanofibers piezoelectric sensor is successfully fabricated. • The morphology and structure of nanofibers are seriously affected by the preparation conditions. • The BS-PT nanofibers piezoelectric sensor has stable output voltage and high sensitivity. • Long-term stable performance at 200 °C shows good reproducibility and stability. BiScO 3 -PbTiO 3 (BS-PT) has the high Curie temperature and excellent piezoelectric activity, and has the potential to fabricate high-performance piezoelectric devices. However, the fabrication of one-dimensional BS-PT piezoelectric sensor remains a great challenge. Here, pure phase BS-PT nanofibers are proposed and experimentally demonstrated by optimizing the concentration of the electrospinning additive and the sintering temperature, and the interdigital electrodes are combined to assemble the sensor. The BS-PT nanofibers piezoelectric sensor can maintain a stable sensitivity above 4 V/N in the range of 10–40 Hz at 60–200 °C. In addition, it has a nearly linear output voltage as the excitation pressure increases ranging from 0.07 N to 0.55 N in the range of 160–260 °C, and the sensitivity at 220 °C is still higher than 5.4 V/N. These results highlight the BS-PT nanofibers piezoelectric sensor is promising to be used for high-temperature pressure and vibration measurements. [ABSTRACT FROM AUTHOR]